JP2017085016A - 面発光レーザ素子 - Google Patents
面発光レーザ素子 Download PDFInfo
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000004065 semiconductor Substances 0.000 claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims description 30
- 239000002184 metal Substances 0.000 claims description 30
- 239000000758 substrate Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 230000035515 penetration Effects 0.000 claims 1
- 230000005284 excitation Effects 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 114
- 229910002601 GaN Inorganic materials 0.000 description 6
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
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- H01S5/18386—Details of the emission surface for influencing the near- or far-field, e.g. a grating on the surface
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- H01S5/185—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only horizontal cavities, e.g. horizontal cavity surface-emitting lasers [HCSEL]
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- H01S5/343—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser
- H01S5/34333—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser with a well layer based on Ga(In)N or Ga(In)P, e.g. blue laser
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- H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
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- H01S5/00—Semiconductor lasers
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
- H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
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- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
- H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
- H01S5/18361—Structure of the reflectors, e.g. hybrid mirrors
- H01S5/18369—Structure of the reflectors, e.g. hybrid mirrors based on dielectric materials
Abstract
発光色変換部と励起光源の一体化による小型化が可能な面発光レーザ素子を提供する。
【課題を解決するための手段】
面発光レーザ素子は、第1多層膜反射器と第2多層膜反射器とに挟まれた半導体構造層と、第2の導電型の半導体層上に形成され、透明電極を備えた第1の貫通開口を有する絶縁性の電流狭窄層と、電流狭窄層及び透明電極上に形成された第2多層膜反射器と、第2多層膜反射器上に形成され、且つ、電流狭窄層の第1の貫通開口に共軸に配置された第1の貫通開口の開口径よりも小なる開口径を有する第2の貫通開口を有する熱伝導層と、熱伝導層の第2の貫通開口の上方に形成された蛍光体を備えた発光色変換部とを有する。
【選択図】図4
Description
前記第1多層膜反射器上に形成され、第1の導電型の半導体層、量子井戸層を含む活性層及び前記第1の導電型とは反対の導電型の第2の導電型の半導体層からなる半導体構造層と、
前記第2の導電型の半導体層上に形成され、第1の貫通開口を有する絶縁性の電流狭窄層と、
前記第1の貫通開口を覆い、前記第2の導電型の半導体層に接する透明電極と、
前記透明電極上に形成された第2多層膜反射器と、
前記第2多層膜反射器上に形成され、且つ、前記電流狭窄層の前記第1の貫通開口に共軸に配置された前記第1の貫通開口の開口径よりも小なる最小開口径を有する第2の貫通開口を有する熱伝導層と、
前記熱伝導層の前記第2の貫通開口の上方に形成された蛍光体を備えた発光色変換部を有することを特徴としている。
25 第2多層膜反射器
30 蛍光体層
27 熱伝導層
SEM 半導体構造層
Claims (7)
- 基板上に形成された第1多層膜反射器と、
前記第1多層膜反射器上に形成され、第1の導電型の半導体層、量子井戸層を含む活性層及び前記第1の導電型とは反対の導電型の第2の導電型の半導体層からなる半導体構造層と、
前記第2の導電型の半導体層上に形成され、第1の貫通開口を有する絶縁性の電流狭窄層と、
前記第1の貫通開口を覆い、前記第2の導電型の半導体層に接する透明電極と、
前記透明電極上に形成された第2多層膜反射器と、
前記第2多層膜反射器上に形成され、且つ、前記電流狭窄層の前記第1の貫通開口に共軸に配置された前記第1の貫通開口の開口径よりも小なる最小開口径を有する第2の貫通開口を有する熱伝導層と、
前記熱伝導層の前記第2の貫通開口の上方に形成された蛍光体を備えた発光色変換部を有することを特徴とする面発光レーザ素子。 - 前記熱伝導層は、金属、グラファイトまたはダイヤモンドライクカーボン(DLC)から成ることを特徴とする請求項1に記載の面発光レーザ素子。
- 前記熱伝導層の前記第2の貫通開口の前記最小開口径の部分がレーザ出射光のビームウエストの位置にあることを特徴とする請求項1または2に記載の面発光レーザ素子。
- 前記熱伝導層の前記第2の貫通開口の前記最小開口径の部分から前記発光色変換部側の開口縁部までの表面上に形成された反射膜を備えていることを特徴とする請求項3に記載の面発光レーザ素子。
- 前記熱伝導層の前記第2の貫通開口の前記最小開口径の部分から前記発光色変換部側の開口縁部までの表面が階段状、テーパー状、曲面状または放物面状に広がるように形成されていることを特徴とする請求項3または4に記載の面発光レーザ素子。
- 前記熱伝導層の前記第2の貫通開口の前記最小開口径はレーザ出射光のビームウエスト径と等しいことを特徴とする請求項3乃至5に記載の面発光レーザ素子。
- 前記放物面状に広がるように形成された前記熱伝導層の前記第2の貫通開口の放物面表面の焦点が前記発光色変換部の表面に位置するように前記放物面表面が形成されていることを特徴とする請求項5に記載の面発光レーザ素子。
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JP2015213531A JP6681694B2 (ja) | 2015-10-30 | 2015-10-30 | 面発光レーザ素子 |
US15/331,384 US9735544B2 (en) | 2015-10-30 | 2016-10-21 | Surface emitting laser element |
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WO2020026573A1 (ja) * | 2018-07-31 | 2020-02-06 | ソニー株式会社 | 面発光半導体レーザ |
DE102021113021A1 (de) * | 2021-05-19 | 2022-11-24 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Halbleiterlaservorrichtung und optoelektronisches bauelement |
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JP2003295319A (ja) * | 2002-04-04 | 2003-10-15 | Nitto Kogaku Kk | 光源装置及びプロジェクタ |
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US9735544B2 (en) | 2017-08-15 |
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